2 PROTON HIGH-SPIN EXCITATIONS AND DIPOLE BANDS IN HG-192

The 192Hg nucleus was populated in the (Gd(S, 4n))-Gd-160-S-36 reaction at a beam energy of E = 159 MeV. Emitted gamma-rays were detected with the EUROGAM array comprising 43 Compton-suppressed large volume Ge detectors. The level scheme of 192Hg has been extended up to an excitation energy of E = 10.4 MeV and spin I = 34 h. Two new structures, made of competing DELTAI = 1 and DELTAI = 2 transitions have been observed and their connexions with the low-lying levels established. Their lowest levels are located at 6.304 MeV and 6.879 MeV excitation energy. The experimental results are compared with mean-field HF + BCS calculations. It is proposed that the new structures originate from deformation-aligned quasi-proton excitations pi(i13/2*h9/2)K = 11 and pi(h9/2)K = 8(2), coupled to rotation-aligned quasi-neutron nu(i13/2)n and quasi-proton pi(h11/2)2 excitations.

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